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P. PEARSON.

VENTILATOR.

APPLICATION FILED JULY 22. 1934.

1,19%,314. I Patented Aug. 8,1916.

Attorne PETER PEARSON, 0F MENOIVIINEE, MICHIGAN.

VENTILATOR.

Specification of Letters Patent.

Patented Aug. 8, 1916.

Application filed July 22, 1914-. Serial No. 852,409.

through the air exit, at the same time accomplishing the foregoingwlthout render-.

ing the device unsightly or awkward in appearance, which would prohibitits use.

A further object is to provide a ventilator of such construction that itwill be extremely rigid and thus able to withstand hard usage to whichit will be necessarily exposed.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, can be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the drawings accompanying this specification and forming a partthereof, the preferred embodiment of my invention is illustrated.

In said drawings :Figure 1 is a sectional view of the ventilator,illustrating the same as being secured to a roof. Fig. 2 is a crosssectional view taken on the line 22 of Fig. 1. Fig. 3 is a crosssectional View taken on the line 33 of Fig. 1.

Referring to the drawings in which similar reference numerals designatecorresponding parts throughout the several views, a car roof 4 isprovided with the aperture 5 therein and to the side walls of which aresecured the brackets 6 whereby the ventilator casing or housing 7 isrigidly secured to and extends through the car roof.

The housing 7 is substantially cylindrical in contour and includes apartition 8 intermediate its ends, thus dividing the housing into anupper driving fan compartment 9 and a lower ventilating fan compartment10, the same being mutually independent and noncommunicating as will beapparent from Fig. 1. The driving fan compartment 9 is closed at itsupper extremity by the cover 11 while as the side walls of the saidcompartment are provided with the diametrically opposed lipped openings12 whose diametric center line extends substantially parallel to thelongitudinal axis of the car and therefore in alinement with thedirection of travel thereof.

A shaft 13 extends axially of the housing,

projecting through an aperture 14 within the partition and supported atits upper extremity by the bearing 15 and at its lower extremity by thevertical bearing 16. The upper bearing end includes a block 17 rigidlysecured to the center of the cover 11 and through which block extendsthe bolt 18 which is held in adjusted position by means of the lock nut19. The lower extremity of the bolt is pointed as at 20 and coacts witha conical recess 21 within the shaft so as to effect a bearingtherebetween. The lower bearing 16 includes a horizontally disposedstrip 22 extending between the walls of the housing and supporting theweight of the shaft and the various members disposed thereon. Thebearing strip is provided with a recess 23 therein in whichthe pointedextremity 24 of the shaft seats, and thus effects a step bearingtherewith.

A driving fan 25 is rigidly mounted upon and is adapted to rotate theshaft 13, being driven by the air which is forcibly projected throughthe openings 12 in the side walls of the housing. The driving fan is ofthe horizontal type and includes a plurality of substantially V-shapedblades 26 disposed at one side and radially of the shaft as disclosed inFig. 2. As the air passes through the openings 1212 due to the forwardtravel of the car, the air coming into contact with the blades of thefan forcibly rotates the latter and thus actuates the shaft. Anexhausting or ventilating fan 27 is rigidly secured to the shaft, is ofthe propeller type and is adapted to forcibly withdraw the air from thelower portions of the housing and therefore from the compartment withwhich the housing communicates.

The lower extremity of the housing is open to thus define an inlet 28,whereas, the upper extremity of the driving fan compartapertures 29arranged as a single horizontal row, through which the air from thehousing makes its'exit; A hood or cowl 30 is rigidly secured to thehousing at its upper extremity in alinement with the partition 8 so thatthe pressure exerted upon the housing due to the securement of cowl willbe taken up and borne by the partition in question. The cowl projectsdownwardly and outwardly and houses and protects the outlet openings;29, thus preventing snow and cinders from being driven into the fancompartment which would prevent the proper operation of the exhaustingfan and also be I liable to make their way into the interior of the car.The number of ventilators installed upon each car may be varied asdesired and consistent with the proper ventilation thereof.

Having thus fully described my invention, what I claim is 2- Thecombination with a structure to be ventilated, said structure having anopening in the top thereof, of a housing having an open end seatedwithin the opening in said 7 structure, said housing extending above the1 structure, an imperforate partition dividing the housing into a lowerand upper compartment, said compartments being out of opposed openingstherein, the blades of said fan being V-shaped in transverse section andseparated at their inner ends, and an endless hood extending around thecasing above the openings in the wall of the lower compartment, saidhood extending downwardly across the openings and being substantiallyfrusto-conical.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two witnesses.

PETER PEARSON.

Witnesses:

JOHN E. J onus, ELEANOR JONES.

Copies of this patent may be obtained for five cents each, by addressingthe Gommissioner of Patents, 7 o Washington, D. C.

